Chimney-top.



Nu. 684,528. Patented oet. l5, 190|.

B. scHnoER'.

G H l M N E Y T0 P.

(Applicgtion led Feb. 14, 1901,)

(No Model.)

Ty: Ncnms sirens co.. Puoraumo., WASHINGTON. n. c 1

I NITED STATES PATENT OFFICE'.

BERNHARDWSCHROER, OF DORTMUND, GERMANY.

CHlMNEY-TOP.

SPCFICATON forming* part of Letters Patent No. 684,528, dated October15, 1901. Application fled February 14, 1901. Serial No. 47,220. (Nomodel.)

To alt 'LU/wm, it may concern:

Be it known that I, BERNHARD SCHROER, a citizen of the German Empire,residing at Dortmund, in the Province of Westphalia, Germany, haveinvented a certain new and useful Improvement in Chimney-Tops, of whichthe following is a specification, reference being had therein to theaccompanying drawings. i

The subject of the present invention is a chimney-top by means of whichthe wind entering the shafts from above is caught up and conducted outand the draft of the chimney improvedb The new invention is illustratedin the accompanying drawings,'in whichS-s Figure l is a vertical sectionof my i111- proved chimney-top; and Fig. 2, a cross-sectIio'n of thesame, taken on the line X X of ign l. 4

tt is the chimney-top; in the walls of which channels are provided,conducting from the exterior into the shaft. The chimney is soconstructed that the cross-section diminishes by steps from above, thelower lip of each channel projecting somewhat beyond the lower lip ofthe adjacent upper one-that is to say, the portions of the wall o c' c2separating two adjacent channels b form a series of steps. By means ofthis gradual diminution of the cross-section of the chimney-top the windentering the shaft from above will be caught up by the projecting lowerlips of the various channels t and conducted ontward, so that the airrising in the shaft cannot be driven back and the draft so destroyed.The wind entering from below into the cha11- nels insures a good draft.In the drawings three portions of the wall c c' c2 are shown arrangedincreasing stepwise in section, the fourth portion c being drawn of thesame size as the portion c2. It is obvious, however, that thechimney-top may be constructed with another member of such steps thanthat shown Without the essential feature of the invention being departedfrom.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent-m j A chimney-top the outside of which is planepresenting no external steps, and provided with lateral channels leadingfrom the outside of the walls into the shaft, arranged in such mannerthat the cross-section of the shaft diminishes stepwise downward,whereby internal projecting lips are formed for the purpose ofobstructing and laterally deviating the downward current of air,substantially as described I In testimony whereof l affix my signaturein presence of two witnessese BERNHARD SCHROER.

Witnesses: n

OTTO KoNIe, EMIL BLoMBEReb

